Method of casting metals.



No Drawing.

' uniran s'rarnsrnrnnr orrion WESLEY GROFF NICHOLS, 6F CHICAGO HEIGHTS, ILLINOIS,

I METHOD OF CASTING'METALS.

assess.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, lVEsLEY Gnorr Xionorls, a citizen of the United States, and

a resident of Chicago Heights, in the county of Cook and State of Illinois, have made and invented'certain new and usefulImprovements in Methods of Casting Metals, of which the following is a specification.

My invention relates to an improvement in the methodof casting metals, the object sought to be accomplished being to devise asimple and economical method whereby the cast or finished article will be materially strengthened or otherwise rendered more etticient forthe purpose or purposes for which it is intended.

In the manufacture of various articles, it has heretofore been the common practice to cast the metal around wrought iron cores, rods, bars, plates, etcl, for the purpose of lending strength tothe finished article, and

in some instances, for the purpose of preing of the insert, a gas is formed, which becoming trapped in the .cast metal, forms blow-holes, resulting in an imperfect castm %.he object of my improved method is to so treat the insert prior to the molten metal being poured around it, that all dan er of its being burned is overcome,and the anger of formation of the gas and resulting blowholes, obviated.

It will be understood that my invention is in nowise limited to the manufacture of castings of any particular form or contour,

or dimensions, or to castings made for any particular use or purpose, nor to the parinforcing element made from iron, steel, or

other desired metal. 7

In practice, I prepare what '1 term the dip consisting of a liquid adhesive and a heat resisting or insulating material. The

I Patented Nov, 2, 1999.,

Application filed. August 21, 1909. Serial No. 514,014.

adhesive is preferably a quiclndrying one, 1

that which Ihave used with excellent results,

, being ordinary fish glue. With this adhesive I thoroughly mix ,the heat resisting substance or material, preferably in the form of a fine powder, and which may consist of one of the elemental minerals or substances,

for example, graphite, or a metallic powder, as powdered aluminum; or a carbonaceous substance, such for example as powdered charcoal, coke breeze, orcoal; or an oxid of metal, for example, mineral paint, red lead, bauxite, chromite, magnesia, lime, limestone,

alumina, siloxicon; or I may use the silicates of the metals for example, silica, clay, slag or glass; I have also used the carbonates of the metals, for example, dolomite, magnesite, white lead; also the carbids, for example, the carbidsof silicon; or a'mixture of any two or more of these substances, for instance, powdered brick, ground anister, clay, soapstone, sand, ground crucib es, mica schist, magnesite, ground slag, asbestos, cement, kaolin, china or porcela1n.- After pre paring the mixture, the insert is then dipped into the same, and promptly dried in any of the well known Ways, a complete coating, covering or envelop adhering thereto, which when dry acts as an efi'icient insulating or heat resisting barrier or wall to the heat of the molten metal when poured around the insert, it being essential, of course, to thoroughly protect each andevery part of the insert or reinforcing member with which the molten metal might come in contact. The insert when thus protected, is placed in the mold. and the molten metal poured around it in the usual Way. 2

While I have above mentioned a number of insulating materials, yet I do not wish it understood that my invention shall be limited thereto, as the claim is intended to include any and all substances which when applied to the, insert or reinforcing element as above described, will act as a barrier or wall to the heat of the molten metal to prevent the burning or destruction of said insert, and thus preserve its integrity for all uses and par oses for which it is employed.

aving fully described my invention,

' Letters Patent, is:

what I'claim as new and desire to secure by 1. The hereinbefore described method of permanently casting one metal into another, consisting in first applying to the member to be cast in, a heat insulating material consistin of, a mixture of quick-drying liquid adhesive and a heat insulating material, drying the same, and finally pouring the molten metal around said member.

2. The hereinbefore described method of permanently casting one metal into another, consisting in first applying to the member 1 to be cast in, a protective coating comprising a mixture of fish glue andta heat insulating substance, drying the same, and finally pourconsisting in first applying to the metal to be cast in, a heat insulating mixture of fish glue and silica, and finally ouring the molten metal around said coated member.

Signed at Chicago Heights, in the county of Cook and State of Illinois, this 18th day of August A..D. 1909.

WESLEY GROFF NICHOLS.

Witnesses:

Gno. FRANCIS Wonrr, RUSSELL WHITMAN. 

